Json Server Api calls

api_calls.js

function api(method, uri, body) {
    url = 'http://localhost:3000/' + uri;
    return fetch(url, {
        method: method,
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
        },
        body: JSON.stringify(body)
    })
    .then(function(response) {
      return response.json()
    })
    .then(function(json) {
      console.log('parsed json: ', json)
    })
    .catch(function(ex) {
      console.log('parsing failed: ', ex)
    });
}

function get(uri) { return api('GET', uri); }

function post(uri, body) { return api('POST', uri, body); }

function put(uri, body) { return api('PUT', uri, body); }

function del(uri) { return api('DELETE', uri); }